Creator
Cast
Synopsis
The series unfolds from the perspective of the two members of the secret group, those being Maribel Hearn and Renko Usami, the only members of the Secret Sealing Club. And describes the various stories that happened in Gensokyo in the past. 
Original title 秘封活动记录
First air date Dec. 30, 2015
Last air date Dec. 31, 2025
Seasons 1
Episodes 5
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